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CVE-2025-71140— media: mediatek: vcodec: Use spinlock for context list protection lock

EPSS 0.03% · P8
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I. Basic Information for CVE-2025-71140

Vulnerability Information
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Vulnerability Title
media: mediatek: vcodec: Use spinlock for context list protection lock
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: mediatek: vcodec: Use spinlock for context list protection lock Previously a mutex was added to protect the encoder and decoder context lists from unexpected changes originating from the SCP IP block, causing the context pointer to go invalid, resulting in a NULL pointer dereference in the IPI handler. Turns out on the MT8173, the VPU IPI handler is called from hard IRQ context. This causes a big warning from the scheduler. This was first reported downstream on the ChromeOS kernels, but is also reproducible on mainline using Fluster with the FFmpeg v4l2m2m decoders. Even though the actual capture format is not supported, the affected code paths are triggered. Since this lock just protects the context list and operations on it are very fast, it should be OK to switch to a spinlock.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在硬IRQ上下文中使用互斥锁保护上下文列表，可能导致调度器警告。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 0a2dc707aa42214f9c4827bd57e344e29a0841d6 ~ 2c1ea6214827041f548279c9eda341eda0cc8351 -
LinuxLinux 6.9 -

II. Public POCs for CVE-2025-71140

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III. Intelligence Information for CVE-2025-71140

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Same Patch Batch · Linux · 2026-01-14 · 43 CVEs total

CVE-2025-71112net: hns3: add VLAN id validation before using
CVE-2025-71122iommufd/selftest: Check for overflow in IOMMU_TEST_OP_ADD_RESERVED
CVE-2025-71108usb: typec: ucsi: Handle incorrect num_connectors capability
CVE-2025-71110mm/slub: reset KASAN tag in defer_free() before accessing freed memory
CVE-2025-71109MIPS: ftrace: Fix memory corruption when kernel is located beyond 32 bits
CVE-2025-71105f2fs: use global inline_xattr_slab instead of per-sb slab cache
CVE-2025-71104KVM: x86: Fix VM hard lockup after prolonged inactivity with periodic HV timer
CVE-2025-71103drm/msm: adreno: fix deferencing ifpc_reglist when not declared
CVE-2025-71102scs: fix a wrong parameter in __scs_magic
CVE-2025-71106fs: PM: Fix reverse check in filesystems_freeze_callback()
CVE-2025-71111hwmon: (w83791d) Convert macros to functions to avoid TOCTOU
CVE-2025-71113crypto: af_alg - zero initialize memory allocated via sock_kmalloc
CVE-2025-71114via_wdt: fix critical boot hang due to unnamed resource allocation
CVE-2025-71115um: init cpu_tasks[] earlier
CVE-2025-71116libceph: make decode_pool() more resilient against corrupted osdmaps
CVE-2025-71117block: Remove queue freezing from several sysfs store callbacks
CVE-2025-71118ACPICA: Avoid walking the Namespace if start_node is NULL
CVE-2025-71120SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf
CVE-2025-71119powerpc/kexec: Enable SMT before waking offline CPUs
CVE-2025-71121parisc: Do not reprogram affinitiy on ASP chip

Showing top 20 of 43 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-71140

Anonymous User
2026-01-15 06:08:11

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